{"library":"miscreant","title":"Miscreant (Python)","description":"Miscreant.py is a Python implementation of the Miscreant advanced symmetric encryption library, providing AES-SIV (RFC 5297), AES-PMAC-SIV, and STREAM constructions. These algorithms offer misuse-resistant authenticated encryption, particularly AES-SIV, which prevents catastrophic failures from nonce reuse. The last stable version is 0.3.0, released in December 2017, and the project is effectively unmaintained.","language":"python","status":"abandoned","last_verified":"Sat May 16","install":{"commands":["pip install miscreant"],"cli":null},"imports":["from miscreant.aes.siv import SIV"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import os\nfrom miscreant.aes.siv import SIV\n\n# AES-SIV requires a key twice the size of a standard AES key (e.g., 32 or 64 bytes)\n# For a 128-bit AES-SIV key, generate 32 bytes (2 * 16 bytes)\nkey = os.urandom(32) \n\nsiv = SIV(key)\n\nplaintext = b\"This is my secret message!\"\n# Associated data (AD) is authenticated but not encrypted\nassociated_data = [b\"header1\", b\"header2\"]\n\n# Encrypt (seal) the message\nciphertext = siv.seal(plaintext, ad=associated_data)\nprint(f\"Ciphertext: {ciphertext.hex()}\")\n\n# Decrypt (open) the message\ntry:\n    decrypted_plaintext = siv.open(ciphertext, ad=associated_data)\n    print(f\"Decrypted: {decrypted_plaintext.decode()}\")\nexcept Exception as e:\n    print(f\"Decryption failed: {e}\")","lang":"python","description":"This quickstart demonstrates how to initialize the AES-SIV cipher, encrypt a plaintext message with associated data, and then decrypt it. Note the requirement for a key of 32 or 64 bytes.","tag":null,"tag_description":null,"last_tested":null,"results":[]},"compatibility":{"tag":null,"tag_description":null,"last_tested":"2026-05-16","installed_version":"0.3.0","pypi_latest":"0.3.0","is_stale":false,"summary":{"python_range":"3.10–3.9","success_rate":100,"avg_install_s":3.3,"avg_import_s":0.03,"wheel_type":"sdist"},"results":[{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine (musl)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.03,"mem_mb":1.5,"disk_size":"35.8M"},{"runtime":"python:3.10-slim","python_version":"3.10","os_libc":"slim (glibc)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":3,"import_time_s":0.02,"mem_mb":1.5,"disk_size":"36M"},{"runtime":"python:3.11-alpine","python_version":"3.11","os_libc":"alpine (musl)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.04,"mem_mb":1.6,"disk_size":"38.4M"},{"runtime":"python:3.11-slim","python_version":"3.11","os_libc":"slim (glibc)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":2.7,"import_time_s":0.04,"mem_mb":1.6,"disk_size":"39M"},{"runtime":"python:3.12-alpine","python_version":"3.12","os_libc":"alpine (musl)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.03,"mem_mb":1.3,"disk_size":"28.3M"},{"runtime":"python:3.12-slim","python_version":"3.12","os_libc":"slim (glibc)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":3.6,"import_time_s":0.03,"mem_mb":1.3,"disk_size":"29M"},{"runtime":"python:3.13-alpine","python_version":"3.13","os_libc":"alpine (musl)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.03,"mem_mb":1.4,"disk_size":"28.1M"},{"runtime":"python:3.13-slim","python_version":"3.13","os_libc":"slim (glibc)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":3.4,"import_time_s":0.03,"mem_mb":1.3,"disk_size":"28M"},{"runtime":"python:3.9-alpine","python_version":"3.9","os_libc":"alpine (musl)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.03,"mem_mb":1.5,"disk_size":"36.2M"},{"runtime":"python:3.9-slim","python_version":"3.9","os_libc":"slim (glibc)","variant":"miscreant","exit_code":0,"wheel_type":"sdist","failure_reason":null,"import_side_effects":"clean","install_time_s":3.6,"import_time_s":0.03,"mem_mb":1.5,"disk_size":"37M"}]}}